X-Shaped ternary five-block molecules, composed of a rigid p-terphenyl core, two terminal glycerol groups and two flexible n-alkyl or semiperfluorinated chains fixed laterally to opposite sides of the terphenyl moiety, form liquid crystalline phases built up of honeycomb-like arrays of polygonal cylinders, where the rod-like aromatic cores form cylinder walls with a thickness equal to the width of a single molecule.
X 型三元五嵌段分子由一个刚性对三联苯内核、两个末端甘油基团和两个横向固定在对三联苯相对侧的柔性正烷基或半氟化链组成,形成由蜂窝状多角形圆柱阵列构成的液晶相,其中棒状芳香族内核形成的圆柱壁厚度等于单个分子的宽度。
Functionalized Paddle Wheel Complexes from BODIPY Carboxylic Acids
BODIPY-appended paddlewheelcomplex with typical Cu···Cu and Cu–O distances and four BODIPY units in a distance of 9.681 A and 9.747 A from the dinuclear center. Treatment with donor solvents results in the decomposition/monomerization of the compound, which could be shown crystallographically for pyridine. Rhodium(II) ions form soluble paddlewheelcomplexes with four different BODIPY carboxylates.
使用 Sonogashira 和 Stille 型偶联方案制备了一系列在发光体和羧酸酯官能团之间带有芳香族连接单元的 BODIPY 羧酸。二茂铁和氢醌单元可以通过这些方法中的任何一种引入。用铜和铑的二价金属离子研究了 BODIPY 羧酸配体的金属配合物形成。铜形成不溶性物质,在一种情况下结晶。X 射线晶体学分析表明,在距双核中心 9.681 A 和 9.747 A 的距离内,存在具有典型 Cu…Cu 和 Cu-O 距离和四个 BODIPY 单元的 BODIPY 附加桨轮复合物。用供体溶剂处理导致化合物的分解/单体化,这可以通过结晶学显示吡啶。铑 (II) 离子与四种不同的 BODIPY 羧酸盐形成可溶性桨轮复合物。一个例子的晶体学分析显示了二铑和二铜衍生物的同构性质。光谱学和循环伏安法为铑配合物的有效分子内能量和电子转移途径提供了初步见解。
The synthesis and conformation of oxygenated trianglimine macrocycles
作者:Nikolai Kuhnert、Ana Lopez-Periago、Giulia M. Rossignolo
DOI:10.1039/b414747m
日期:——
The synthesis of series of D2h and C2v symmetric oxygenated aromatic dicarboxaldehydes, using dilithiation methodology, is described along with their reactivity in the [3 + 3] cyclocondensation reaction with (1R,2R)-diaminocyclohexane to give oxygenated trianglimine macrocycles. Macrocycles derived from C2v symmetric dialdehydes give macrocycles with a stereogenic aromatic plane with complete diastereocontrol, as a mixture of rotamers.